Dental jaw-brace



GQHMHURD Dental Jaw-Brace.

No. 225,525. Patent ed Mar. 16, 1880.

M mvejmon WITNESSES' ATTORNEYS .HER. WASHINGTON D O N. PETERS EHO UNITEDSTATES PATENT OFFICE.

GEORGE H. HURD, OF CLEVELAND, OHIO.

DENTAL JAW-BRACE.

SPECIFICATION forming part of Letters Patent No. 225,525, dated March16, 1880.

' Application filed October 6, 1879.

To all whom it may concern:

Be it known. that I, GEORGE H. HURD, of Cleveland, in the county ofOuyahoga and State of Ohio, have invented certain new and usefulImprovements in Jaw-Braces; and I do hereby declare the following to bea full, clear, and exact description of the invention, such as willenable others skilled in the art to which it pertains to make and useit, reference being had to the accompanying drawings, which form part ofthis specification.

My invention relates to dentistry, and more particularly to an improveddevice for retaining the mouth in an open position while the dentist isemployed in filling or extracting teeth, or performing any otheroperation upon the teeth or interior of the mouth.

My invention consists in the combination, with a standard having headedextremities respectively provided with end recesses, of flexible tipsfitted in the latter and formed with concave outer faces, said bracebeing adapted to be placed between a single tooth of the upper jaw and asingle tooth of the lower jaw. V

In the drawings, Figure 1 represents a perspective view of differentforms of my invention, and Fig. 2 a vertical sectional view of one formof my invention, illustrating its construction. Fig. 3 illustrates themanner of ap plying my device to the mouth of a patient.

In the drawings, A represents the central portion or body of my device;B B, its recessed ends, and O O concave flexible tips adapted to fit therecessed ends B B.

In constructing my device I prefer to make the outer surfaces of theflexible tips concave. This construction prevents the whole fromdisplacement, the contraction of the muscles of the mouth furthertending to secure it more rigidly and to prevent the possibility ofescape.

My device is used by placing one of the concave flexible tips upon atooth in the upper jaw and the other flexible tip upon a tooth in thelower jaw, thus bracing the jaw open.

Havingthus described my invention, What I claim is- A jaw-braceconsisting in the combination,

with a standard, A, having headed extremities B, respectively providedwith end recesses, of flexible tips 0, fitted in the latter and formedwith concave outer faces, said brace being adapted to be placed betweena single tooth of the upper jaw and a single tooth of the lower jaw,substantially as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JNo. GROWELL, Jr., WILLARD FRACKER.

